Wrench.



J. E. MONAGHAN.

' WRENCH.

APPLICATION FILED AUG. 16, 1913.

1,088,716. Patented Mar. 3, 1914.

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J. E. MONAGHAN.

WRENCH.

APPLICATION FILED AUG. 16, 1913.

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(invents 0 JEMon/AGHAN Wikmcooco I UNITED STATES PATENT orFioE.

JOHN E. MON'AGHAN, 0F FORT MORGAN, COLORADO.

WRENCH.

To all whom it may concern:

Be it known that I, JOHN E. MONAGI-IAN, a citizen of the United States,residing at Fort Morgan, in the county of Morgan and State of Colorado,have invented certain new and useful Improvements in renches, of whichthe following is a specification, ref erence being had to theaccompanying drawin s.

This invention relates to wrenches and it more particularly relates toan improved form of adjustable ratchet wrench.

One of the objects of this invention is to provide an improved wrenchwhereby bolts and nuts of different sizes may be engaged and manipulatedin places and positions in which other wrenches are not available.

Another object is to provide a wrench of this character which may haveits parts locked rigidly together so that it may be used as an ordinarysolid wrench.

Another object is to provide a Wrench of this character which may bequickly and easily adjusted to fit different sized boltheads and nuts,and which, when adjusted, positively remains in adjusted position untilit is readjusted.

Another object is to provide an adjustable ratchet wrench of thischaracter which is simple of construction, comparatively inexpensive,strong, durable, and thoroughly practical, efficient and effective.

In the accompanying drawings which suppleme'nt this specification,Figure 1 is a plan view of the wrench, a portion of the handle beingremoved; Fig. 2 is a longitudinal sectional View; Fig. 3 is a Viewsimilar to Fig. 1, except that the clamping jaws are removed, andcertain other elements are in different positions; Fig. 4: is asectional view on the line 4:1 of Fig. 1; Fig. 5 is a plan view of themajor jaw member; Fig. 6 is a sectional view on the line 6-6 of Fig. 5;Fig. 7 is a view taken at right angles to Fig. 5; Fig. 8 is an endelevation of the major jaw member; Fig. 9 is a sectional view throughthe wrench-head, on the line 9-9 of Fig. 2; Fig. 10 is a sectional viewthrough the minor or slidable jaw member; Fig. 11 is an elevation of theminor jaw member; Fig. 12 is a front elevation view of the minor jawmember, or a view taken at right angles to Figs. 10 and 11; and Fig. 13is a fragmentary sectional view showing certain of the parts, asdisclosed in Fig. 2, adjusted to a different position.

Specification of Letters Patent.

Application filed August 16, 1913.

Patented Mar. 3, 1914;.

Serial No. 785,111.

Referring to these drawings in which s m lar reference characterscorrespond to similar parts throughout the several views, the devicecomprises a main body member 15. a major jaw member 16, a minor jawmember 17, a locking bolt 18 and a cam-ring or bolt-actuating member 19.The main body member 15 comprises a handle 15 and a bifurcated headmember, the furcations 15" of which are of segmental or semi-crescentconfiguration. In other words, the bifurcated head member iscrescent-shaped, and the handle 15 unites with the head at the medialportion thereof. This crescentshaped head is provided on its innersurface with notched ribs 15 with their inner extremities in closeproximity one to the other and with oppositely disposed rabbets 15 onopposite sides of the notched ribs. At the junction of the head andhandle elements is provided a groove 15" which communicates with thespace between the contiguous ends of the ribs 15 and also communicateswith a peripheral groove 15 formed in the handle. One of thesemi-crescent furcations is provided with an aperture 15, for a purposehereinafter explained. The end of the recess or groove 15 extends acrossthe head and in the longitudinal direction of the handle, so as toreceive the hooked end portion 18' of the member 18 and secure it inslidable engagement with the handle. The member 18 is provided with arecess or notch 18 in which the cam elements 19' and 19 are adapted toslide so as to contact with the shoulders at the ends of the recess 18for moving the member 18 in the longitudinal direction of the handle andin and out between the contiguous ends of the notched ribs 15 and toengage with a notch 16 of the major jaw member. This major jaw member isof circular formation and extends through an arc of approximately 275degrees being provided with opposite and spaced flanges 16, each ofwhich is separated in the opposite extremities of a chordal planetherethrough so as to provide notches which communicate with grooves16*, the sides and bottoms of which constitute a guide or track in whichthe minor jaw member is adapted to slide, said minor jaw memher beingprovided with a pair of spaced, parallel and screw threaded bars 17which are adapted to fit snugly within the grooves 16" and be movedlongitudinally therein by means of a screw 20. This screw is seated in.

an aperture 16 which extends through the major. jaw member 16 andcommunicates with the opposite grooves 16". The bottoms of the grooves16 are provided with convexed ribs or bosses 16 for the purpose ofthickening the member 16 sufliciently at this point for the provision ofan aperture or bore 16 this-aperture registering with an aperture 20extending axially through the screw 20. Through these registeringapertures extends a pivot or axle 21, provided with a socketed head, thesocket 21 of which is non-cylindrical so as to receive thenoncylindrical end of a shaft 22, the latter being axially alined withthe pivot 21 and adapted foractuating the latter and oo-acting therewithfor rotating the screw 20. A. handle 23 comprising a knurled head and ashank extending therefrom, is pivotally connected at 24 to the member 22A recessed keeper 25 is formed onthe outersurface of one of thefurcations 15 and this keeper is provided with a recess into whichextends an enlargement 22 which isformed on the shaft 22 andconstitut'esa stop, for preventing undue longitudinal movement of the shaft 22. jThe mouth of the aperture 25 has a radially slotted bushing or stopmember 22 threaded therein, and the slot thereof communicates with aslot 25 of the lug 25, so that the shank may be disposed in these slots,when the wrench is in use, so as to prevent breaking or bending theshank. v

The member 16 is provided with a bar 16 lying at right angles to thenut-engaging surface 16 and this bar is seated and adapted to slide in arecess 17 formed between the side elements 17 which combine with theelements 17" to form a bifurcated lateral extension of the jaw element17", the elements 17 extending at right angles to the nut-engagingsurface of the element 17 This latter element is provided with a recess17 C in which the arcuate guide or tongue 16 is seated when the wrenchis in its wide open position, while the parallel peripheral flanges 17and the parallel flanges 16 em-- brace the alternately toothed andnotched ribs 15 and have sliding engagement therewith, so that themembers 16 and 17 may.

rotate freely between the furcations 15 The member 16 is provided withopposo as to limit the outward movement of the p'awland prevent itsdisengagement from the pawl seat when the members 16 and 17 are rotatedinto such position that the pawl is exposed between the free ends of thefurcations 15. V

In operation, the user of the tool first adjusts the jaws against theopposite side of the nut or bolt-head, while the parallel faces of thejaws are in registry with the free ends of the furcations 15 by rotatingthe handle 23, while the shaft 22 is seated in the socket 21, therebyrotating the screw 20 and moving the jaw member 17 with reference to themember 16. The jaw being properly adjusted the handle 23 is pulledoutward, so as to disengage the members 21 and 22, the member 18' iswithdrawnfrom the notch 16, by rotating the member 19 so 1 that the camsurfaces of the latter impinge 1 upon the contiguous shoulders oftheloclt j ing bolt 18 and drawit out of engagement with the member 16.It will be seenzthat the jaw members are free to rotate in onedirectlon, but are held against rotation in the opposite dlrectlon bymeans of the ratchets 26. When it is desired to employ the wrench as asolid wrench, the member 16 is locked in fixed relation with the member15b5 means of said locking bolt 18 and said locking cam 19.

From the foregoing it will be seen that 4' I have provided a wrench ofthis character which is fully capable of attaining the desired andspecified objects in a thoroughly practical and effective manner.

lVhile the accompanying drawings illustrate what I believe to be thepreferred embodiment of my invention, it is to be understood that theinvention is not limited thereto, but that various changes may be madein the construction, arrangement and proportions of the parts withoutdeparting from the scope of the invention as defined in the appendedclaims.

What I claim is l. A device of the character described relatively to theremainder, an endwise movable member mounted for movement longitudinallyof the handle and capable of engagement with one of the jaws whereby thejaws are held against rotary movement, said member being provided with arecess aflording spaced shoulders, and a sleeve embracing the handle andcapable of rotation therearound and extending through the recess, theopposite margins of such sleeve being provided with cams coacting withthe shoulders of the member whereby the same may be moved into or out ofengagement with the jaw upon rotation of the sleeve.

2. A device of the character described including ahead provided with ahandle, jaws rotatably supported by the'head, a retary adjusting elementcarried by one of the jaws engageable with a second jaw, said rotaryelement being provided with a socket, a shaft capable of endwise andaxial movements mounted in the head and adapted to be engaged within thesocket of the adjusting element, and an operating member for such shaftpivotally engaged therewith and projecting exteriorly of the head, suchop- 10 erating member serving as a stop to prevent movement of the shaftrelative to the adjustin element when such shaft is moved out ofengagement with the socket of such adjusting element.

In testimony whereof I hereunto affix my 15 signature in the i'esence oftwo witnesses.

J HN E. MONAGHAN. WVitnesses:

ERNEST E. GALKINs, HARRY SIMMs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patentn. Washington, D. G.

